Process of placing wrappers on packages and mechanism for carrying out said process



v A. R. SGHOLIN, PROCESS OF PLACING WRAPPERS 0N PACKAGES AND MECHANISM FOR CARRYING OUT SAID PROCESSL APPLICATION HL'ED OCT. 7, 191a.

Patented May 30,- 1922.

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APPLICATION FILED OCT. 7,1918.-

Patented May 30,192;

I6 S HEETSSHEET Z A. R. SCHOLIN.

PR OCESS OF PLACING WRAPPERS 0N PACKAGES AND MECHANISM FOR CARRY ING OUT-SAID PROCESS.

APPLICATION FILED 0C T. 7, m5.

1,417,946, Patented May-30, 1922.

I6 SHEETS- SHEET 3.

I A. R. 'SCHOLIN.

PROCESS OF PLACING WRAP'PEBS 0N PACKAGES AND MECHANISM FOR CARRYING OUT-SAIDlPBOCESS.

APPLICATION FILED OCT. 7, I9I8.

1,417,946. Patented May 30, 1922;

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Patented May30, 1922.

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APPLICATION FILED OCT-7.1918- IIIIIIIIIIIIII Hu A. R. SCHOLIN.

PROCESS or PLACING WRAPPERS 0N PACKAGES AND MECHANISM FOR CARRYING OUT SAID PROCESS.

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APPLICATION FILED OCT. 7. 1918. Y

Patented y 30, 1922.

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Patented May 30, 1922.

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PROCESS OF PLACING WRAPPERS 0N PACKAGES AND MECHANISM FOR CARRYING OUT SAID PROCESS.

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1 117,946 Patented May 30, 1922.

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PROCESS OF PLACING WRAPPERS ON PACKAGES AND MECHANISM FOR CARRYING OUT SAID PROCESS.

APPLICATION FILED 0C1. 7 I918.

Patented May 30, 1922.

16 SHEETS-SHEET I6.

' UNITED STATES PATENT OFFICE.

AXEL R. SCHOLIN, OF CHICAGO, ILLINOIS, ASSIGNOR TO AUTOMATIC WRAPPING MACHINE 00., OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

PROCESS OF PLACING WRAPPERS N PACKAGES AND MECHANISM FOR CARRYING OUT SAID PROCESS.

To all whoin it may concern:

Be it known that I, AXEL R. SGHOLIN, a

. citizenof the United States, residing. at Chicago, in thecounty of Cook and State of Illinois, have invented certain new and useful Processes of Placing Wrappers on Packages and Mechanism for CarryingOut Said Processes, of which the following 15 a specification.

- bination and arrangement of parts shown in the accompanying drawings and described in the following specification, and also in the steps of the rocess described in the specification and illustrated in the drawings. The invention is more partlcularly pointed out in the appended claims.

In the drawings- I Fi 1 is a side elevation of a machine embodylng one form of the mechanism comprising a part of this invention.

Fig. 2 is an elevation of the machine shownin Fig. 1 looking .at the side of the machine opposite that shown in Fig. 1.

Fig. 3 is a top plan view of one-end of the machine shown in Figs. 1 and 2 WlllCll will be designated the front end of the machine in this specification.

Fig. 4 is a top plan view of the rear end of the machine, the front portion of which is shown in Fig. 3.

Fig. 5 is a vertical section on line 5-5 of Fig. 3.

Fig. 6 is a vertical section on line 6-6 of Fig. 3.

Fi 7 is a vertical section substantially on line 7 7 of Fig. 3.

Fig. 8 is a transverse vertical section on line 8-8 of Fig. 1.

Fig. 9 is a. transverse vertical section on line 9-9 of Fig. 1.

Fig. 10 is a vertical section on line 10-10 of Fig. 6.

Figs. 11 and 12 are diagrammatic vertical sectional views through the wrapping cylinder and associated parts showing two stages in the process of wrapping a container.

Fig. 13 is a section on line 13-13 of Fig. '5.

Specification of Letters Patent. t t May 30 1922 v a Application filed October 7, 1918.

Serial No. 257,222.

Fig. 16 is a fragmentary perspective view showing a portion of the operating mechanism for the paper feed.

Fig. 17 1s a sectional view on line 17-17 of Flg. 4:. Fig. 18 of ig. 4.

F 1g. 19 is a detail in section of a portion of the paper feeding mechanism.

is a sectional view on line 18-18 Fig. 20 is a section on line 20-20 of F ig. 4.

Fig. 21 is a fragmentary elevation with parts in section on line 21-21 of Fig. 15; i

and

Fig. 22 is a section on line 22-22 of Fig. 1. The mechanism illustrated in the drawings 1s designed for handling and wrapping cylindrical containers, but it should be understood that the invention is not confined to containers of any particular shape, but may be adapted to containers of other than cylindrical shape. The containers to be wrapped are designatedby theinumeral 25 and are fed to the machine along a runway having supporting members 26 and guides 27. Endless belts 28 are preferably arranged to travel in grooves 29, in the supporting members 26. as shown in Figs- 5 and 17. The belts 28 are driven by pulleys I 30 secured to a shaft 31, which is in turn driven by a belt 32, Figs. 2 and 6, which belt passes over a pulley 33 on the end of the shaft 31 and over a pulley 34. on a shaft 35 mounted near the upper portion of the machine and driven by a pulley 36 and belt 37 which is connected with any suitable source of power. The ends of the belts 28, opposite pulleys 30. pass over idler pulleys 38, as shown in Fig. 1.

The frame of the machine may be supported on legs 39 and'includes a skeleton base 40 and side members 41 and 42. The side members 41 and 42 are formed to provide open bearing seats 43 in which bearings 44 and 45 rest and in which they are secured by lag screws46. It will be apparent that the bearings 44 and 45 may be readily moved into and out of position in their hearing seats by loosening the screws sleeve 47, as shown in Fig. 8. A shaft 50 upon which the wrapping drum to be described is mounted has one end journaled in the sleeve 47, and has its opposite end held by a sleeve 51 journaled in the bear ing 4:5 and forming the hub for the wrapping drum. The shaft is rigidly secured to the hub 51 by a pin 52 passing through the shaft and hub -and also passing through the hub of a spur gear '53 which is thus held rigidly on the hub 51 of the wrapping drum. A diso'54 is carried rigidly on the hub 51 and forms one end of the wrapping drum which is desi nated generally by the numeral 55. The ot 'er end of the wrapping drum 55 is formed by a disc 56 secured to the shaft 50 adjacent the spur gear 49 by means of a pin 57. The two ends 547 and 56 are connected by plates 58 which cover a portion of the periphery of the drum, as shown in F ig. 6. The drum 55 is rotated by the gear wheel 53 which is driven by a gear 59 secured to a shaft 60, Figs. 7 and 9., which shaft is journaled in bearings 61 and 62 in the side members 41 and 42 0f the supporting frame. The shaft 60 is provided with a belt pulley 61 loosely mounted thereon and held in place by a collar 62. A gear 63 is carried by the shaft 60 adjacent the pulley 61 and is provided with an elongated hub 6 1- rigidly secured to the shaft 60.. A clutch bar 65 is mounted to slide longitudinally in an opening in the hub 6 1, and the end of the clutch bar is arranged to engage notches 66 in the face of the hub 67 of the drive pulley 61. A coil spring 68 is housed in an opening in the clutch bar 65 and bears against a pin 69 to normally force the bar 65 toward the opening 66 in the hub of the pulley wheel 61. The bar 65 is provided with a lug 70 arranged to engage a catch lever 71. rigidly secured to the end of a shaft 72 journaled in the frame members 41 and 42, as shown in Figs. 1 and 3. The latch bar 71 is provided with a handle 73'by means'of which the latch may be raised out of enga "ement with the lug 70 to permit the olutc bar 65 to engage the drive pulley 61 and thus cause the shaft 60 and gear 63 to rotate in unison with the drive pulley. Automatic mechanism for operating the bar 71 is also provided, aswill be explained. I

As shown in Fig. 6., the shaft 72 carries an arm 74 rigid therewith, the arm having a link 75 pivoted to the outer end thereof which connects the arm 7A with a second arm.7 6 rigidly secured to a shaft 77 journaled in the supporting frame of the ma- 'rotation of the tAlZQdG chine near the base plate 40. The shaft '77 has ri idly secured thereto a trip finger 78 positioned in the path of the containers 25 adjacent the discharge end of thechute by which the containers are carried into the machine. The Weight of the parts 71, 74, 75 and 76 normally tends to rotate the trip finger? 8 in a clockwise direction, as viewed in Fig. 6, so that the finger will stand in a position to be struck by one of the containers 25 whenever a container is introduced into the machine. As soon as this occurs the finger 78 will be rotated in a counter-clockwise direction and the catch bar 71 will be lifted out of engagement with the lugZO permitting the clutch bar 65 to engageone of the openings 66 in the hub of the drive wheel 61, thus causing the shaft 60, together with the parts driven thereby, to begin to rotate. As long as the finger 78 is held in the position shown in Fig. 6, the pulley 61 will continue to thus force the bar 65 out of engagement" with the drive wheel 61'permitting the machine to come to rest after one complete shaft 60. It will be noted that the inner flange of the hub 64 is of greater diameter on one side than it is on the other, as shown at 80 in Fig. 9', so that the bar 71 is held upwardly during the greater art of the rotation of the shaft 60 independ dntly of the action of the container 25 against the trip finger 78. The

cam-shaped portion 80 of the hub 6 is so shaped however that it permits the bar 71.

to return into position toengage the lug 70 in time to withdraw the clutch member 65 when a Single rotation has been completed. It will thus be seen that when the catch bar 71 is once raised, the shaft 60 will be given one complete rotation after which it contact with the finger 78 in a manner to be described, a second container falls into position against the trip finger 7 8 before the shaft 60 has completed a. revolution, and thus themaohine is caused to operate continuously as long as the containers 25 continue to be fed thereto. When the supply of containers is for any reason discontinued, the operation of the machine is automatically stopped.

The drum 55, as best shown in Figs. 6 and 13, is provided with two pairs of clamping discs 81 and 82 for engaging the ends of the containers 25 so that the containers are successively picked up by theidrum and carried about the shaft 50 as the drum rotates thereon to permit the wrapper to be wound upon the container. Each of the clamping discs 81 and 82 is provided with a peripheral flange 83 which overlaps the end of the container 25 when the container is clamped by the discs so as to properly center the container with its axis in alinement with the axis of the discs 81 and 82. Each of the discs 81 is secured to the end of a shaft 84 which is journaled in a bearing 85 formed in the end 56 of the drum 55. The shafts 84 are rotated by spur gears 86 secured to the ends of the shafts on the side of the disc 56, oppositethe clamping discs 81, the gears 86 meshing with the gear 49 and being driven thereby independently of the rotation of the drum 55. The gear 49 derives its rotation through the sleeve 47 from the gear 48, the gear 48 being drivenby an idler 87 from the gear 63, as shown in Fig. 1.

By this mechanism the discs 81 are caused to rotate upon their own axes while they revolve aboutthe shaft 50, and when the containers 25 are clamped between the discs 81 and 82, the containers also are rotated by the discs 81 at the same time that they are carried by the drum 55 about the shaft 50.

The discs 82 are carried on spindles 88 whichextend through alined openings in the end member 54 of the drum 55 and the gear 53 by which the drum is rotated. Projections are provided on the gear 53 and disc 54 which are hollowed out to form housings 89 which contain springs 90 surrounding the spindles 88 and bearing against pins 91 in the spindles 88 to force the spin dles and their disc 82 inwardly into engagement with the ends of the containers 25. The outer ends of the spindles 88 carry discs 92 which are. engaged by a cam 93 secured to the bearing 45 by set screws 94, as shown in Fig. 8. The cam 93, as shown in Figs. 13and 14, is so shaped that it enters beneath the discs 92 of the spindles 88 and holds the spindles and their discs .83 away from the end of the containers 25 during a portion of the rotation of the drum 55, but permits the holding discs 83 to engage the ends of the containers during the remainder of the rotation of the drum. The cam 93 is shaped to withdraw the holding discs 83 from their clamping position when the discs are adjacent the end of the chute 26 so that the containers may be moved into position between the clamping discs. A slight rotation from the receiving position of the drum moves the disc 92 on the cam 93 a sufficient amount to permit the clamping discs 82 to engage the containers 25, and the clamping discs remain in this position until the containers have been brought by the drum into a position adjacent a discharge chute shown at 95 in Fig. 6 of the drawings. At this point in the rotation of the drum, the clamping disc 83 is again withdrawn from engagement with the end of the container, and the container permitted to fall into the discharge chute.

In order to properly center the containers in position in the wrapping drum and to assist in rotating the containers and positioning the wrappers thereon, a plurality of rollers 96 are mounted on shafts 97 inposition to engage the periphery of the containers. The shafts 97 have their ends journaled in the ends 54 and 56 of the drum 55, as shown in Fig. 8, and each shaft is provided with a pinion 98 which meshes with a gear 99 formed on the periphery of the clamping disc 81, as shown in Figs. 5 and 13. The pitch circle of the gear teeth 99 is of the same diameter as the outer periphery of one of the containers 25, while the pitch 95 circle of the teeth on the pinion 98 is of the same diameter as the outer periphery of the rollers 96. This arrangement causes the periphery of the rollers 96 to bear against the periphery of the containers 25 and ro- 100 tate at the same linear speed therewith. A sleeve 100 is loosely mounted on the shaft 50 between the ends 54 and 56 of the drum 55 and is provided with discs 101 of a proper diameter to engage the inner sides of the 105 containers 25 when they are in position in the clamping discs 81 and 82. The sleeve 100 has formed thereon at one end a gear 103 arranged to mesh with the teeth 99 on the discs 81 so that the discs 101 are rotated by the gear 103 to travel in unison with the periphery of the containers 25 which they engage.

The mechanism for receiving the containers25 from the chute 26 and moving them into position in the wrapping drum is illustrated in Figs. 2, 6 and 9. The containers 25 as they are discharged from the end of the chute 26 are received upon a tilt ing platform 104 which is rigidly mounted once for each rotation of the drive shaft 60. Since the ratio of the gears 59 and 53- is 1 to 2, it follows that the receiver 104 will be tilted upwardly twice for every revolution of the wrapping drum, and the parts are so timed that the upward movement of the platform will take place when the clamping.

discs 81 and 82 are in position to receive thecontainer carried thereby- It will be noted from Fig. 6. that the tripping finger 78 projects upwardly through a slot 111 in the receiving platform 104, so that the tripping finger may engage the container held by the platform. An arcuate plate 112 extends downwardly from the edge of the receiving platform 104 in position to engage the container 25 at the end of the chute 26 during the upward movement of the receiving platform' so that the line of containers in the chute26 will be held backwardly against their downward movement until the receiving platform is again in its lowermost position.

The wrappers to 'be placed-uponthe containers 25 are first soaked and stretched by mechanism to be described and then fed to the wrapping drum over 'a glue roll 113.

The glue roll 113 is rotatably mounted atthe front endofa glue pot 114 which is suppo'rted' by flanges 115 projecting inwardly from the framemembers 41 and 42, as shown in Fig. 10. The ends of the glue roller 113 project into bearings 116 carried by the edges of the glue pot 114, as shown in Fig. 9,

and the roller is'provided with a central squared opening into which a square shaft 117 projects, as shown in Figs. 6 and 9. A gear 118 'is supported by a bearing 119 and projects at one side of the frame member 41, as shown in Figs. 1 and 9,1in position to mesh with the main driving gear 63.. The

gear 118 is provided with a square opening alining with the opening in the glue roll'113.

The square shaft',1;17 is provided with a knob 120 by which the shaft may be inserted through the opening in the gear 118 and into the opening in the roll 113. "When the shaft 117 is in place the roll 113 will be driven by the gear 118 and the squared shaft may be withdrawn from engagement with the roll to permit the glue pot-114 to he slid longitudinally along its supporting flanges 115 and withdrawn from' the machine for cleaning Or other purposes. The end of the.

' end of a second roll 124 journaled in the front end of-the glue pot 114 in position to contact with the roll 113. The roll 124 is immersed in 'the'glue within the-pot 114 and carries'it upwardly and deposits a coating of glue on the roll 113. The amount of glue on the roll 113 is regulated by a scraper 125 which may be slid toward and away from the roll 113 by,a rod 126 controlled by a thumb nut 127 and lock nuts 128. It will benoted that both rolls 113 and 124 rotate in a counterclockwise direction, as viewed in Fig. 6, so-that thecontracting surfaces move in opposite directions to one another. This insures a thorough coating of the upper roll and also gives the proper direction of rotation of this-roll to feed the paper forwardly in the machine, while the lower rollfrom the front edge of the glue pot andextend into the grooves 129 in order to strip the paper from the roll in case it tends to adhere thereto. A series of discs 131 are mounted on a shaft 132 journaled in bearings 133- on the upper edges of the frame members 41 and42. .The shaft 132 is driven by a gear 134 which mesheswith the gear 118. The discs 131 are arranged in alinement with the grooves 129 in the roller 113 and may be arranged to extend slightly into these grooves below the periphery, of the glue roll. The paper as it passes over the glue roll 113 is pressed into engagement therewith by the discs 131 to insure a proper coating of glue. .The grooves 129 prevent contact between the discs 131 and the surfaceof the 'roll so that the discs do notbecome covered with, glue when-there is no paper between the discs and the roller. The shaft 132 carries a sprocket wheel .135 which drives a chain 136 passing over a sprocket wheel 137 on a shaft 138journaled in bearings v139 on'the machine frame. The shaft 138 carries a roller 140 over which an apron 150 travels. The apron 150 is supported at its forward end on a roller l 51- mounted to rotate on a shaft 152. A wiper 153 is secured to a disc shaft 154 extending trans- .versely "of the frame of the machine, as

wrapper drum. An arm 156 is secured to the shaft 154 and carries a roller 157 arranged to bear on the periphery of the disc' 54 forming the end of the wrapper drum. As will be seen from Fig. 14 the disc 54 is provided'with a pair of cams 158 extending upwardly above the outer edge of the disc, the'cams being'located adjacent the clamping members 82 for the containers 25. It

will also be seen from Fig. 14 that the containers 25 when in place in the wrapper drum extend slightly beyond the periphery of the disc 54, and the cams 158 are for the purpose of raising. the wiper 153 to permit it 'to properly engage'the peripheries of-the 

